Use these top quality, UK manufactured airline fittings for making up custom hoses or to convert your compressor or other air tools to a quick release system. They have a push-fit, positive lock action and are robust and hardwearing. They are suitable for most workshop compressed air applications. Female connectors have either male or female 1/4" BSPT threads. Male connectors are available with male or female 1/4" BSPT threads or a hose tail. Nominal bore: 4.8mm.